Dermaut L R, Beerden L
Am J Orthod. 1981 Mar;79(3):296-304. doi: 10.1016/0002-9416(81)90077-4.
A method was developed for measuring bone displacements due to orthodontic forces. By means of holographic interferometry, the effects of Class II elastics on a dry skull were investigated. The bone deformation induced by the elastic force was studied on double-exposed holograms and also by the live fringe method. The results of this study reveal that sutures in the skull behave as weak structures, creating an interruption in the fringe pattern. With regard to the nasofrontal suture, the main movement, as could be expected, was an anteroposterior displacement. Related to the first molar, chosen as the anchorage unit, the vertical displacement was most pronounced. Furthermore, according to the findings of this study, the zygomaticotemporal suture was behaving as a hinge axis in a transversal direction. The method developed seems to be suitable for measuring bone displacements qualitatively as well as quantitatively.
开发了一种测量正畸力引起的骨位移的方法。借助全息干涉测量法，研究了II类弹力牵引对干燥颅骨的影响。通过双曝光全息图和实时条纹法研究了弹力引起的骨变形。该研究结果表明，颅骨中的缝表现为薄弱结构，导致条纹图案中断。关于鼻额缝，正如预期的那样，主要运动是前后位移。与选为支抗单位的第一磨牙相关，垂直位移最为明显。此外，根据本研究的结果，颧颞缝在横向方向上表现为铰链轴。所开发的方法似乎适用于定性和定量地测量骨位移。
